"Watch What Happens Live with Andy Cohen" has become a nightly destination for A-listers including Meryl Streep, Cher, Oprah, Jennifer Lopez, Ryan Reynolds, Jennifer Lawrence, Mariah Carey, Lady Gaga, Will Ferrell and Gwyneth Paltrow. From "Pleading the Fifth" to "Opening the Vault," endless memorable moments have been revealed during the show's seven-year tenure as host Andy Cohen continues to challenge some of the biggest celebrities and Bravolebrities on the only truly live, interactive series in late-night television.